This section applies only in Montgomery County and Prince George’s County. The county council of each county shall at least once every 3 years: Prepare a county plan; Prepare, review, and revise, as the county council considers necessary, a separate statement of objectives and policies to be achieved and implemented by the county plan in the county; and Consider the following in the statements of objectives and policies of the county plans: Planning; Zoning; Population estimates; Engineering; Economics; and State, regional, municipal, local, and area plans. To achieve the objectives and policies set by the county council, the county executive of each county shall: Prepare a preliminary draft of the county plan; From time to time review and, as the county executive or county council considers necessary, prepare amendments to the county plan including revisions to service area category designations; and Submit to the county council for the county council’s consideration, revision, modification, comment, and approval: The draft; and Any revision or amendment to the draft. The county executive of each county shall prepare and submit to the county council: A final draft of the county plan to conform to the action of the county council in approving the draft; and A final revision or amendment to the county plan that takes into consideration any significant change in the intervening planning or development in the county. At least 30 days before the date set for a public hearing under subsection (f) of this section, the county council of each county shall submit its final draft or the final draft of any revision or amendment of the county plan for recommendation to: The Washington Suburban Sanitary Commission; and The Maryland-National Capital Park and Planning Commission. The county council of each county shall: Hold a public hearing on: Its final draft of the county plan; and The final draft of any revision or amendment to the county plan; and Publish a notice of the time and place of the public hearing at least 10 days before the hearing in a newspaper of general circulation in the county. After the public hearing in each county, the county council shall review, may amend as the county council considers necessary, and shall adopt the county plan or the revision or amendment to the county plan. The adoption of the county plan or a revision or amendment of the county plan by the county council of the county is not final until 10 days after the action adopting it. During the 10-day period provided by paragraph (2) of this subsection, the county executive may: Review the county plan or any revision or amendment to the county plan; and Recommend for the consideration of the county council whatever change to the county plan or any revision or amendment to the county plan that the county executive considers necessary or desirable. After the time periods required for adoption under this section, the county council of each county shall submit to the Department, as required by § 9-506(b) and (c) of this subtitle: The county plan; or Any revision or amendment to the county plan.